3 questions on "BGP Communities - Matching COMMUNITY with Community Lists"

How is the BGP 32-bit COMMUNITY formatted according RFC 1997?
Global: Local

AA represents ASN
NN represents  community value as set by that ASN
What is the default value format for Cisco BGP 32-bit COMMUNITY?
32 decimal value
What command can be used to change Cisco router to use COMMUNITY format according RFC 1997?

R1(config)#ip bgp-community new-format
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